EcoR1 Capital, LLC

Insider Reports History

Location
San Francisco, CA
Signature
/s/ Oleg Nodelman, Individually, and as Manager of EcoR1 Capital, LLC
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by EcoR1 Capital, LLC:

Company Role Class Num Shares Value Price $ Report Date Ownership
Mirati Therapeutics, Inc. 10%+ Owner Common Stock 7,396,979 $436,569,701 $59.02 18 Dec 2023 Indirect
Zymeworks Inc. Director, 10%+ Owner Common Stock 22,970,388 $291,953,631 $12.71 26 Jun 2025 Indirect
ANAPTYSBIO, INC Director, 10%+ Owner Common Stock 7,880,094 $102,051,945 $12.95 02 Jan 2025 Indirect
iTeos Therapeutics, Inc. 10%+ Owner Common Stock 10,688,978 $85,511,824 $8.00 15 May 2025 Indirect
Zymeworks Inc. Director, 10%+ Owner Pre-Funded Warrants 5,086,521 $49,999,993 $9.83 26 Dec 2023 Indirect
PROTHENA CORP PUBLIC LTD CO 10%+ Owner Ordinary Shares 5,304,596 $40,544,618 $7.64 06 May 2025 Indirect
Graphite Bio, Inc. 10%+ Owner Common Stock 8,538,446 $34,836,860 $4.08 06 Jan 2023 Indirect
Tango Therapeutics, Inc. 10%+ Owner Common Stock 10,630,736 $31,010,920 $2.92 07 Nov 2024 Indirect
Voyager Therapeutics, Inc. 10%+ Owner Common Stock 3,851,507 $27,538,275 $7.15 11 Jan 2023 Indirect
Adaptimmune Therapeutics PLC 10%+ Owner Ordinary Shares 100,371,882 $25,092,970 $0.2500 30 Jul 2025 Indirect
TScan Therapeutics, Inc. 10%+ Owner Voting Common Stock 5,000,000 $24,842,500 $4.97 26 May 2023 Indirect
Mersana Therapeutics, Inc. 10%+ Owner Common Stock 11,328,000 $21,523,200 $1.90 19 Dec 2024 Indirect
Corvus Pharmaceuticals, Inc. 10%+ Owner Common Stock 81,077 $198,639 $2.45 01 Oct 2021 Indirect
Mersana Therapeutics, Inc. 10%+ Owner Pre-Funded Warrants 8,036,688 19 Dec 2024 Indirect
Aktis Oncology, Inc. Director Common Stock 347,305 12 Jan 2026 Indirect
Aktis Oncology, Inc. Director Class A Common Stock 86,222 12 Jan 2026 Indirect
Aktis Oncology, Inc. Director Series A Redeemable Convertible Preferred Stock 0 12 Jan 2026 Indirect
Aktis Oncology, Inc. Director Series B Redeemable Convertible Preferred Stock 0 12 Jan 2026 Indirect
Odonate Therapeutics, Inc. 10%+ Owner Common Stock 0 $1.55 10 Dec 2021 Indirect
Zymeworks Inc. Director, 10%+ Owner Pre-Funded Warrants (right to acquire) 0 26 Jun 2025 Indirect

Insider Reports Filed by EcoR1 Capital, LLC

Symbol Company Period Transactions Value $ Form Type Role Filing Time
AKTS Aktis Oncology, Inc. 12 Jan 2026 12 +$39,999,996 4 Director 12 Jan 2026, 20:28
AKTS Aktis Oncology, Inc. 08 Jan 2026 0 $0 3 Director, 10%+ Owner 08 Jan 2026, 20:49
ADAP Adaptimmune Therapeutics PLC 28 Jul 2025 3 -$6,890,236 4 10%+ Owner 30 Jul 2025, 18:20
ZYME Zymeworks Inc. 26 Jun 2025 3 -$12.46 4 Director, 10%+ Owner 27 Jun 2025, 17:50
ZYME Zymeworks Inc. 15 May 2025 2 +$635,586 4 Director, 10%+ Owner 19 May 2025, 18:35
ITOS iTeos Therapeutics, Inc. 14 May 2025 2 +$38,685,562 4 10%+ Owner 16 May 2025, 18:52
ITOS iTeos Therapeutics, Inc. 13 May 2025 0 $0 3 10%+ Owner 13 May 2025, 19:09
PRTA PROTHENA CORP PUBLIC LTD CO 02 May 2025 3 -$50,839,807 4 10%+ Owner 06 May 2025, 19:06
ZYME Zymeworks Inc. 16 Apr 2025 2 +$1,456,408 4 Director, 10%+ Owner 18 Apr 2025, 15:17
ZYME Zymeworks Inc. 03 Apr 2025 2 +$3,623,970 4 Director, 10%+ Owner 07 Apr 2025, 18:34
ZYME Zymeworks Inc. 31 Mar 2025 3 +$1,497,322 4 Director, 10%+ Owner 02 Apr 2025, 19:02
ZYME Zymeworks Inc. 25 Mar 2025 2 +$1,227,309 4 Director, 10%+ Owner 27 Mar 2025, 18:53
ZYME Zymeworks Inc. 20 Mar 2025 3 +$1,643,248 4 Director, 10%+ Owner 24 Mar 2025, 17:45
ZYME Zymeworks Inc. 17 Mar 2025 3 +$2,866,553 4 Director, 10%+ Owner 19 Mar 2025, 18:32
ZYME Zymeworks Inc. 11 Mar 2025 3 +$13,120,914 4 Director, 10%+ Owner 13 Mar 2025, 19:35
ZYME Zymeworks Inc. 16 Jan 2025 2 +$1,963,538 4 Director, 10%+ Owner 21 Jan 2025, 17:34
ZYME Zymeworks Inc. 13 Jan 2025 3 +$2,278,811 4 Director, 10%+ Owner 15 Jan 2025, 18:12
ZYME Zymeworks Inc. 08 Jan 2025 2 +$2,974,819 4 Director, 10%+ Owner 10 Jan 2025, 18:27
ANAB ANAPTYSBIO, INC 30 Dec 2024 3 +$1,099,642 4 Director, 10%+ Owner 02 Jan 2025, 18:17
ZYME Zymeworks Inc. 30 Dec 2024 3 +$5,321,176 4 Director, 10%+ Owner 02 Jan 2025, 17:51
ZYME Zymeworks Inc. 24 Dec 2024 3 +$1,882,115 4 Director, 10%+ Owner 27 Dec 2024, 18:41
ZYME Zymeworks Inc. 19 Dec 2024 3 +$17,544,284 4/A Director, 10%+ Owner 26 Dec 2024, 12:46
MRSN Mersana Therapeutics, Inc. 19 Dec 2024 2 $0 4 10%+ Owner 23 Dec 2024, 19:42
TNGX Tango Therapeutics, Inc. 06 Nov 2024 3 -$8,435,743 4 10%+ Owner 08 Nov 2024, 19:24
ANAB ANAPTYSBIO, INC 14 Aug 2024 1 +$9,999,978 4 10%+ Owner 16 Aug 2024, 12:04
ADAP Adaptimmune Therapeutics PLC 08 Mar 2024 0 $0 3 10%+ Owner 26 Mar 2024, 12:00
ZYME Zymeworks Inc. 26 Dec 2023 1 +$49,999,993 4 10%+ Owner 23 Dec 2024, 19:53
ZYME Zymeworks Inc. 26 Dec 2023 1 +$49,999,993 4 10%+ Owner 28 Dec 2023, 12:11
/report/000093583623000741-ecor1-capital-llc-2023-12-18 Mirati Therapeutics, Inc. 18 Dec 2023 0 $0 3 10%+ Owner 27 Dec 2023, 16:04
TNGX Tango Therapeutics, Inc. 13 Oct 2023 0 $0 3 10%+ Owner 16 Oct 2023, 15:42
MRSN Mersana Therapeutics, Inc. 27 Jul 2023 0 $0 3 10%+ Owner 31 Jul 2023, 13:55
ZYME Zymeworks Inc. 16 Jun 2023 1 +$27,202,000 4 10%+ Owner 21 Jun 2023, 16:04
TCRX TScan Therapeutics, Inc. 26 May 2023 0 $0 3 10%+ Owner 05 Jun 2023, 16:09
ZYME Zymeworks Inc. 28 Mar 2023 1 +$1,600,000 4 10%+ Owner 30 Mar 2023, 17:47
ZYME Zymeworks Inc. 19 Jan 2023 2 +$2,982,733 4 10%+ Owner 23 Jan 2023, 17:00
ZYME Zymeworks Inc. 13 Jan 2023 3 +$9,697,526 4 10%+ Owner 18 Jan 2023, 17:27
ZYME Zymeworks Inc. 10 Jan 2023 2 +$7,874,083 4 10%+ Owner 12 Jan 2023, 15:47
VYGR Voyager Therapeutics, Inc. 09 Jan 2023 3 -$7,142,343 4 10%+ Owner 11 Jan 2023, 17:26
LENZ Graphite Bio, Inc. 06 Jan 2023 0 $0 3 10%+ Owner 06 Jan 2023, 20:30
ZYME Zymeworks Inc. 31 Oct 2022 0 $0 3 10%+ Owner 01 Nov 2022, 15:23
VYGR Voyager Therapeutics, Inc. 21 Jun 2022 2 +$2,662,047 4 10%+ Owner 23 Jun 2022, 17:21
ANAB ANAPTYSBIO, INC 05 May 2022 2 $0 4 10%+ Owner 09 May 2022, 06:04
PRTA PROTHENA CORP PUBLIC LTD CO 05 May 2022 2 $0 4 10%+ Owner 09 May 2022, 06:01
VYGR Voyager Therapeutics, Inc. 21 Apr 2022 0 $0 3 10%+ Owner 25 Apr 2022, 21:30
PRTA PROTHENA CORP PUBLIC LTD CO 12 Jan 2022 1 +$11,250,300 4 10%+ Owner 12 Jan 2022, 17:12
/report/000156761921021902-ecor1-capital-llc-2021-12-01 Odonate Therapeutics, Inc. 01 Dec 2021 5 -$9,432,401 4 10%+ Owner 10 Dec 2021, 17:50
/report/000156761921020730-ecor1-capital-llc-2021-11-17 Odonate Therapeutics, Inc. 17 Nov 2021 0 $0 3 10%+ Owner 18 Nov 2021, 12:00
CRVS Corvus Pharmaceuticals, Inc. 30 Sep 2021 2 -$25,059,900 4 10%+ Owner 01 Oct 2021, 19:39
CRVS Corvus Pharmaceuticals, Inc. 22 Sep 2021 0 $0 3 10%+ Owner 22 Sep 2021, 15:30
PRTA PROTHENA CORP PUBLIC LTD CO 18 Jun 2021 2 +$7,500,000 4 10%+ Owner 22 Jun 2021, 17:05